Thermal potassium alkali method for decarburization
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How to select the appropriate potassium carbonate concentration in thermal potassium-alkali decarburization?
The concentration is roughly between 200 and 240
A potassium carbonate concentration of 25–28% (by mass) is appropriate; if the concentration is too high, the solution will crystallize and get clogged, while if it is too low, the solution’s absorption capacity will be reduced.
In the thermal potassium-alkali method for carbon removal, the alkali concentration refers to the total amount of potassium carbonate and potassium bicarbonate, known as the total alkali level; this value should be maintained between 27% and 30%. It is potassium carbonate that plays a key role in this process. If its concentration is too low, the CO2 absorption efficiency is poor, while if it is too high, the gas-liquid contact is inadequate. Moreover, alkali corrosion increases and blockages are more likely to occur